The Surprising History of Powdered Alcohol.
Pictorial History of the Pocket Knife.
Collection of Bat-Eating Spiders. Related, kind of: Acid-spewing beetles inspire new defense tactic for ATMs.
A Backstage Tour of the Channel Tunnel.
Elegant Henna Tattoo Crowns Help Cancer Patients Cope With Their Hair Loss.
ICYMI, Friday's links are here, and include a marsupial that has marathon sex until it goes blind and drops dead, a smile-inducing animation of a dog searching for his boy during a zombie apocalypse, and photos of lava meeting surf.